I currently live on the second story of an apartment complex, I can’t really put up a fish room. Recently, I had the idea to make a portable system that I think might work. Basically it consist of 3-5 buckets/large bins, syphons between the tanks, and a sponge filter type apparatus. The water will circulate using a modified sponge filter that has a candy cane shaped tube that connects two containers. Syphons will move the water through the tanks and eventually back to the tank with the sponge filter. Currently testing with 5 gallon buckets. Needing ideas, must be non permanent, and I do not want to cut/drill my containers.